Department of Prosthodontics, Gerodontology and Dental Materials, Greifswald University Medicine, Greifswald, Germany.
Restorative Department, College of Dentistry, Ajman University, University Street, Al jerf 1, Ajman, United Arab Emirates.
Clin Oral Investig. 2021 Jan;25(1):255-264. doi: 10.1007/s00784-020-03360-y. Epub 2020 Jun 12.
The purpose of this study was to evaluate and compare the effects of the immediate and delayed loading of strategic mini-implants (MIs) on the satisfaction of patients with removable partial dentures (RPDs).
In this multi-center randomized clinical trial, strategic MIs were inserted under 79 RPDs in 76 participants. Two questionnaires, one for the upper jaw and one for the lower jaw, were given before surgical intervention and 2 weeks, 4 months, 4.5 months, 1 year, 2 years, and 3 years after implant insertion. To estimate the loading effect (immediate vs. delayed) in terms of the odds ratio, an ordinal logistic regression model was used. The Wilcoxon matched-pairs signed-rank test, which was corrected for clusters in the patient population, was used to evaluate changes in patient satisfaction.
After 4 months, a statistically significant difference in favor of the immediate loading group was recognized in terms of the overall satisfaction score. The patient satisfaction scores recorded after 4.5 months and 1, 2, and 3 years showed substantial improvements compared with the scores recorded before implant insertion in both groups. At the item level, substantial improvements were noted in the following domains: general satisfaction, RPD retention, stability, support, eating, speaking, and aesthetics.
Strategic MIs improved the satisfaction of patients with RPDs during the medium-term follow-up period. An earlier improvement in the satisfaction of patients with RPDs was seen after immediate loading of the MIs as compared with delayed loading.
Inserting MIs under existing RPDs can improve patients' satisfaction with their RPDs in several domains.
本研究旨在评估和比较即刻和延迟加载策略性微型种植体（MIs）对可摘局部义齿（RPDs）患者满意度的影响。
在这项多中心随机临床试验中，76 名参与者的 79 个 RPD 下植入了策略性 MIs。在手术干预前以及植入后 2 周、4 个月、4.5 个月、1 年、2 年和 3 年，分别为上颌和下颌各发放一份问卷。为了评估加载效果（即刻与延迟）的优势比，使用了有序逻辑回归模型。为了评估患者满意度的变化，使用了经过患者人群聚类校正的 Wilcoxon 配对符号秩检验。
在 4 个月时，即刻加载组在总体满意度评分方面具有统计学显著优势。在 4.5 个月和 1、2、3 年时，两组患者的满意度评分均较植入前有显著提高。在项目水平上，以下领域的满意度有显著提高：总体满意度、RPD 保留、稳定性、支持、进食、说话和美观。
在中期随访期间，策略性 MIs 提高了 RPD 患者的满意度。与延迟加载相比，即刻加载 MIs 可更早改善 RPD 患者的满意度。
在现有 RPD 下植入 MIs 可以在多个方面提高患者对 RPD 的满意度。
